i sometimes imagine that i have wolf ears and a tail espically around my girlfriend. sometimes i wish i would wake up one day with a wolf ears and tail
@Homura E.N.D. Bumblebee is the one of the most popular ships. If you search around facebook and tumblr, you'll notice that most people have White Rose and Bumblebee as their default OTPs. Hell, even the VAs ship Bumblebee (they even read a fanfic in a podcast) and there's a few moments here and there in the series (shipping googles may increase the amount, tho)
So in short, yeah, it's really that popular.
As for why there's not as much BlakeYang on the site, I don't watch RWBY and know very little about it, so the majority of uploads have been things users have requested be added. And the people who request them like Blake Weiss I guess (and it is different people, not just one person).
Suggestions are welcome from everyone, if you have anything you want to see added, feel free to send a Upload Request.